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Home >> Volvo >> 1995 >> 940 Base, 4D Sedan, AW71 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - Non-Turbo >> Computerized Engine Controls >> Input Devices >> Knock Sensor
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Knock Sensor

Knock sensor detects knocking and sends signal to ignition ECU. ECU is able to gradually retard ignition timing to each individual cylinder. If knocking does not stop, a signal is sent to fuel injection ECU to enrich air/fuel mixture. Two knock sensors are equipped on 6-cylinder engines.

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